需要在laravel中创建一个下拉列表，并将结果插入到新数据库中

Question

我是 Laravel 的新手，我有两个表：users、selected_users 都包含 id、name。 我想创建一个由用户填充的下拉列表，当选择用户名时，它将在下拉菜单旁边插入用户名。 当我按下提交时，名称应保存到 selected_user 表中。

请有人帮助编写此代码如何在视图和控制器中编写它。

Answer 1

我不确定你真正想要实现什么，但请尝试下面的代码；

userview.blade.php

  <div class="container">
   @if(session('success'))
      <h1>{{session('success')}}</h1>
   @endif
   <form method="POST" action="{{route('save.selected-user')}}">
   {{ csrf_field() }}
   <div class="form-group row">    
       <div class="col-sm-8">
       <select class="form-control" id="selectUser" name="user_selected" required focus>
    <option value="" disabled selected>Please select user</option>        
    @foreach($users as $user)
    <option value="{{$user->id}}">{{ $user->name }}</option>
    @endforeach
  </select>
  </div>
<label class="col-sm-4 col-form-label"  id="displayUser">Show selected User 
  here</label>
</div>
 <input type="submit" value="Save">

<script type="text/javascript">
  var mytextbox = document.getElementById('displayUser');
  var mydropdown = document.getElementById('selectUser');
  mydropdown.onchange = function(){
      mytextbox.value = mytextbox.value  + this.value; //to appened
     mytextbox.innerHTML = this.value;
     }
  </script>

TestController.php（确保您有 User 模型和 SelectedUser 模型）

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\User;
use App\SelectedUser;

class TestController extends Controller
{

  public function populateUsers()
  {
    $users = User::all();
    return view('test.userview', compact('users'));
  }

  public function saveUser(Request $rq)
  {
    $selectedUser = new SelectedUser;
    $selectedUser->name = $rq->user_selected;
    $selectedUser->save();

    return redirect()->back()->with('success', 'Selected Username added successfuly');
  }
}

WEB.php

Route::get('/selected-user', 'TestController@populateUsers');
Route::POST('/selected-user', 'TestController@saveUser')->name('save.selected-user');

如果有效请告诉我

Answer 2

添加类别

<div class="container mt-5">
    <div class="row">
        <div class="col-md-12">

            @if (session('status'))
                <div class="alert alert-success">{{ session('status') }}</div>
            @endif

            <div class="card">
                <div class="card-header">
                    <h4>Add Categories
                        <a href="{{ url('layouts/applayout') }}" class="btn btn-primary float-end">Back</a>
                    </h4>
                </div>
                <div class="card-body">
                    <form action="{{ url('layouts/create') }}" method="POST">
                        @csrf

                        <div class="mb-3">
                            <label>Date</label>
                            <input type="date" name="Date" value="{{ old('Date') }}" class="form-control" />

                            @error('Date')
                                <span class="text-danger">{{ $message }}</span>
                            @enderror
                        </div>

                        <div class="mb-3">
                            <label for="expense_type" class="form-label">Expense Types</label>
                            <select name="expense_type_id" id="expense_type" class="form-select">
                                <option value="">Select an Expense Type</option>
                                @foreach ($expenseTypes as $type)
                                    <option value="{{ $type->id }}"
                                        {{ old('expense_type_id') == $type->id ? 'selected' : '' }}>
                                        {{ $type->name }}</option>
                                @endforeach
                            </select>
                            @error('expense_type_id')
                                <span class="text-danger">{{ $message }}</span>
                            @enderror
                        </div>

                        <div class="mb-3">
                            <label>Name</label>
                            <input type="text" name="Name" value="{{ old('Name') }}" class="form-control" />
                            @error('Name')
                                <span class="text-danger">{{ $message }}</span>
                            @enderror
                        </div>

                        <div class="mb-3">
                            <label>Purpose</label>
                            <textarea name="Purpose" class="form-control">{{ old('Purpose') }}</textarea>
                            @error('Purpose')
                                <span class="text-danger">{{ $message }}</span>
                            @enderror
                        </div>

                        <div class="mb-3">
                            <label>Amount</label>
                            <input type="number" name="Amount" value="{{ old('Amount') }}"
                                class="form-control" />
                            @error('Amount')
                                <span class="text-danger">{{ $message }}</span>
                            @enderror
                        </div>

                        <div class="mb-3">
                            <label>Reciept</label>
                            <input type="text" name="Reciept" value="{{ old('Reciept') }}"
                                class="form-control" />
                            @error('Reciept')
                                <span class="text-danger">{{ $message }}</span>
                            @enderror
                        </div>

                        <div class="mb-3">
                            <button type="submit" class="btn btn-primary">Save</button>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>
</div>

任何人都可以完成这个应该从数据库获取数据的下拉列表吗